Just about anywhere in the world from anywhere in the world.  Refueling available?  USA to Iraq, Iraq to Germany to USA.  USA to England and back.

C-130 J's fly out of Keesler AFB near my house and make local flights of about 4 hours almost everyday.  Cruise speed is fairly high for a large prop trransport plane so you can cover some ground.

Go light on the cargo and then load up the fuel until you hit the max takeoff gross and have fun.  When the tanks get to 50% turn around and head home.  Hope for a tailwind.

RayM